Remove real-time collaboration implementation from 7.0 #29967

Job	Run time
Core running from build / Windows	2m 54s
Core running from src / Linux	1m 21s
Core running from src / MacOS	1m 46s
Core running from build / MacOS	1m 49s
Core running from build / Linux	1m 41s
Core running from src / Windows	3m 7s
Failed workflow tasks	0s
Slack Notifications	0s
	12m 38s

Provide feedback